CA1045305A - Toilet stool ventilating means - Google Patents
Toilet stool ventilating meansInfo
- Publication number
- CA1045305A CA1045305A CA243,822A CA243822A CA1045305A CA 1045305 A CA1045305 A CA 1045305A CA 243822 A CA243822 A CA 243822A CA 1045305 A CA1045305 A CA 1045305A
- Authority
- CA
- Canada
- Prior art keywords
- conduit
- adapter plate
- seat
- tank
- toilet bowl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
Abstract
ABSTRACT
An improved toilet stool having an annular conduit seat with intake openings in communication with the inside of the toilet bowl.
The improvement being a ventilating means which comprises an adapter plate situated underneath a tank. The adapter plate has a structure defining a conduit which is in communication with the toilet bowl through the intake openings of the seat. A housed filter element is in communi-cation with the conduit seat through the conduit of the adapter plate, and a means is attached to the filter for removing normally contaminated air from the inside of the toilet bowl through the intake openings, the conduit of the adapter plate, and the filter element, in the order stated, for deodorizing the normally contaminated air and passing it into the surrounding atmosphere. A switch means is connected up to the upper rim of the toilet bowl and is operably connected to the means for removing such that pressure exerted on the top of she seat operates the switch means to activate the means for removing.
An improved toilet stool having an annular conduit seat with intake openings in communication with the inside of the toilet bowl.
The improvement being a ventilating means which comprises an adapter plate situated underneath a tank. The adapter plate has a structure defining a conduit which is in communication with the toilet bowl through the intake openings of the seat. A housed filter element is in communi-cation with the conduit seat through the conduit of the adapter plate, and a means is attached to the filter for removing normally contaminated air from the inside of the toilet bowl through the intake openings, the conduit of the adapter plate, and the filter element, in the order stated, for deodorizing the normally contaminated air and passing it into the surrounding atmosphere. A switch means is connected up to the upper rim of the toilet bowl and is operably connected to the means for removing such that pressure exerted on the top of she seat operates the switch means to activate the means for removing.
Description
3(~5 ~2~
- IMPROVE~D TOILE~T STOOL VENTILATING MEA:NS
This invention relates to a toilet stool ventilating means. More specifically, this invention provides an improved toilet stool ventilating means which utilizes a housed -filter element in communica~ion with a conduit of an adapter plate.
Various other types of toilet stool ventilating devices are known in the prior art as operable for removing contamina~ed air and odors from within a toilet bowl. However, ~hese devices are generally costly to manufacture and unsightly in appearance as well as requiring specially designed toile~ bowls and additional air receiving rings or the like attached 10 to the seats or the toilet bowl structure. Additionally, some of these prior art devices require mounting of the filter unit in a remote location not immediately adjacent to the toilet stool which o-ften times then makes it not easily accessible for filter replacement. One known means of ventilating a toilet stool is to attach an inlet conduit to the seat or to the bowl area and connect the conduit to a filtering unit placed elsewhere; this is not generally satisfactory because of the general unsightly appearance of the additional structure needed to be added to the toilet stool and ~he re-motely placed filtering unit. Another common means of ventilating a bathroom is by using ceiling or wall vents to carry contaminated air 20 from the room; this is generally not satisfactory because of removal of a large quantity of heated or air-conditioned air which must be replaced. `
Therefore, what is needed and what has been invented by me is an im-proved toilet stool ven~ilating means without the foregoing deficiences associated with the prior art. ;
The present invention accomplishes its desired objects by broadly , providing an improved toilet stool mounted on a supporting surface and `
including a generally annular conduit having an exit aperture and intake openings in communica~ion with the ins~le of the ~oilet bowl. The seat circumscribes the upper rim of the toilet bowl when in a lowered posi~ion.
~ ~:
3u A tank is mounted on the toilet s~ool and includes a flushing liquid and ... .. , ., ., ~ . . , ., .. . , .. ... ..... . ... . . . ,. .. . . .. " .. .. ,. . .. .... . .. , : ~
3g~ :
, eans connected therein to supply the flushing liquid ~o the toilet bowl through a discharge conduit. rhe improvement is a ventilating means which comprises an adapter plate situated underneath the tank and having the conduit seat pivotally at~ached thereto. The adapter plate has a structure defining a conduit which is in communication with the exit . ,, .;
aperture of the seat, A housed filter element which has an outlet and an inlet is additionally included and is in communication with ~he conduit seat through the conduit of the adapter. The ven~ilating means also has a means for removing normally con~aminated air from the inside of the toilet bowl 10 through the intake openings, the exit aperture, the conduit of the adapter pla~e, the inlet and the filter element, in order stated, for deodorizing the normally contaminated air and passing i~ into the surrounding atmosphere.
A switch means is connected to the rim and is operably connected to the means for removing such that pressure exerted on the top oE the seat ;
operates the swi~ch means to activate the means for removing.
It is therefore an objec~ of this invention to provide an improved toilet stool ventilating means which overcomes the aforementioned dis-advar~age's associated with prior art devices.
It is another o~ject of this invention to provide an improved toilet 20 stoo~ ventilating means which can be used within a conventional toilet stool structure without substantially altering its appearance.
It is yet another object of this invention to provide an improved toilet stool ventilating means which utilizes a filter, is easy to clean, and is also efficient and relatively economical to ~anufacture arld operate.
These, together with various ancillary objects and features which will become apparent as the following description pro~eeds are obtained by this novel ventilating means for a toilet stool, a preferred embodiment being shown in the accompanying drawings, by way of example only, wherein:
~ ig. 1 is a partial vertical sectional view disclosing the filter 3~) element and blower housed within the tank behind a watertight partition and ~ -_3_ , ~ . . . ,, , - . ,." ......... , . . . . . . .1 . ;, . ...
, ~-. , - . , . . .. ,, ., . . : ........ . ,. . , ..... . . , . , ~........ . . ,~
;, . , ,, , ~ ,. : . ., ,.. , ... .. ., . -i n communication with a condui~ in the adapter plate;
~ ig. 2 is a front elevational ~7iew of the toilet stool of ~ig. 1 having a cut away portion showing the watertigh~ partition separating the filter element and the blower from the flushing liquid;
~ ig. 3 is a partial top plan view of the stool and tank disclosing in dashed lines an embodiment of the adapter plate conduit;
Fig. 4 is a partial top plan view of another embodiment of the stool and tank disclosing in dashed lines the adapter plate conduit being pierced by a flushing liquid discharge conduit;
Fig. S is a fragmentary vertical sectional view disclosing the filter element and blower housed with a compartment connected under-neath the adapter plate;
l~ig. 6 is a partial vertical sectional view taken along the line 6-6 in ~ig. 4; and ~ ig~ 7 is a partial enlarged vertical sectional view of the switch means which activates the blower when pressure is applied to the toilet seat.
Referring in detail now to the drawings, wherein similar or like par~s of the invention are identified by like reference numerals, a 20 toilet stool, generally illustrated as 10, is mounted on a supporting surface 12 and has an annular conduit seat 14 horizontally and pivotally attached to an adapter plate L6, and is essentially aligned therewith when the seat ;, : .
14 is in a lowered position as shown in ~igs. 1, 2, 5 and 6. Conduit seat ;
14 has exit aperture 18 and intake openings 20 which are in communication with the inside of the toilet stool 10. The seat 14 circumscribes an upper rim 22 of the toilet stool 10. A tank 24 with lid 25 is mounted on top of adapter plate 16 and has a flushing liquid 17 and means 26 connected therein to supply the flushing liquid 17 from the tank 24 to the toilet stool 10 through a discharge conduit 28. The adapter plate 16 has .:
^0 a conduit 30 which is in communication with exit aperture 18 and is sealed ~ 4-i3~5i ~t 62. The discharge conduit 28 pierces condui~ 30 in ~igs. 4 and 6 such that the contaminated air being removed from the toilet stool lO generally flows around the conduit 30. ~igs. 1-3, and 5 disclose the discharge conduit 30 as being conventional and not piercing conduit 30.
A housed filter (preferably charcoal) element 32 has inlet 31 and outlet 33 and is in communication with conduit 30, and a means 34 is attached to filter 32 for removing normally contaminated air from the inside of the toilet s~ool 10 through the following: intake openings 20, -exit aperture 18, conduit 30, inlet 31, filter 32, and outlet 33, in order stated, for deodorizing the normally contaminated air and passing it into the atmosphere. Means 34 may be any suitable means but is preferably a blower and has a conduc~or 35 with a plug 37 attached there~o for insertion into a source of power (not shown in the drawings).
A switch means, generally indicated as 36, is connected to rim 22 and is electrically operably connected by conductors 38 to conductor 35 such that pressure exerted on the top of seat 14 operates switch means 36 to activate the means for removing 34. Switch means 36 may be any ~,, suitable switch which is capable of closing an electrical circuit.
Preferably, switch means 36 is a plunger-type as fully disclosed in l~ig. 7.
~ ig. 7 shows seat 14 compressing a plunger 40 which is slidably lodged within a sleeve 42 having a spring 44 for upwardly biasing the plunger 40 against the seat 14 when it is not being used. Contact bar 46 is pivotally fastened within housing 48 and is pivoted against a micro-switch 50 (well known within the art) by the downward force of the plunger 40. Mi~ro- swit~h 50 closes the circuit and activates the blower 34 .
Filter element 32 and the blower 34 attached thereto have two preferred embodiments for their loca~ion. l~igs. 1 and 2 disclose a first embodiment showing the filter 32 and blower 34 removably housed in the tank 24. A watertight partition 52 is attached to the internal walls of the tank 24 to ~ S - , :
r ~ 3~ 5 prevent filter 32 and blower 34 from being inundated with flushLng liquid 17.
~ilter 32 is lodged in compartment 54. ~ig. 5 discloses a second embodiment where filter 32 and blower 34 are removably housed in a compartment 56 which is attached underneath the adapter plate 16 and has a door 57.
Embodiment one discharges purified air from underneath the lid 25 (see l~ig, 1), and the second embodiment discharges purifiecl air into the sur-rounding atmosphere through louvers 60 (see ~ig. 5) With continual reference to the clrawings for operation of the inven-tion, seat 14 (normally biased upward by a spring which is not shown in the drawings) when used is lowered such that plunger 40 is driven against contact bar 46 which causes micro-switch 50 to close the electrical circuit on conductors 38 and 35 and activate the blower 34. When operating the blower 34 creates a vacuum through filter 32 and conduit 30 such that contaminated air within stool 10 is sucked through intake openings 20, through conduit 30, and through filter 32 wherein purification takes place.
Purified air egresses through outlet 33 and is blown into the surrounding atmosphere by blower 34 either through louvers 60 (~ig. 5) or underneath lid 25 (~ig. 1).
The path which the normally contaminated air takes to the inlet 31 of filter 32 depends on whether the embodiment in Fig. 3 is being used or the embodiment of Fig. 4 which causes the contaminated air to be swirled around discharge conduit 28 is being used. As aforementioned the em-bodiment of ~ig. 3 discloses the discharge conduit 28 as not piercing the .
conduit 30 and is somewhat conven~ional. After pressure is released from the top of seat 14 it is upwardly biased by a spring (not shown in the ~ ~drawings) such that seat 14 is lifted off the top of plunger 40. This ~;
causes spring 44 to upwardly bias the plunger away from the contact bar to open the electrical circuit on conductors 38 and 35 and deactivate the blower 34.
G
- IMPROVE~D TOILE~T STOOL VENTILATING MEA:NS
This invention relates to a toilet stool ventilating means. More specifically, this invention provides an improved toilet stool ventilating means which utilizes a housed -filter element in communica~ion with a conduit of an adapter plate.
Various other types of toilet stool ventilating devices are known in the prior art as operable for removing contamina~ed air and odors from within a toilet bowl. However, ~hese devices are generally costly to manufacture and unsightly in appearance as well as requiring specially designed toile~ bowls and additional air receiving rings or the like attached 10 to the seats or the toilet bowl structure. Additionally, some of these prior art devices require mounting of the filter unit in a remote location not immediately adjacent to the toilet stool which o-ften times then makes it not easily accessible for filter replacement. One known means of ventilating a toilet stool is to attach an inlet conduit to the seat or to the bowl area and connect the conduit to a filtering unit placed elsewhere; this is not generally satisfactory because of the general unsightly appearance of the additional structure needed to be added to the toilet stool and ~he re-motely placed filtering unit. Another common means of ventilating a bathroom is by using ceiling or wall vents to carry contaminated air 20 from the room; this is generally not satisfactory because of removal of a large quantity of heated or air-conditioned air which must be replaced. `
Therefore, what is needed and what has been invented by me is an im-proved toilet stool ven~ilating means without the foregoing deficiences associated with the prior art. ;
The present invention accomplishes its desired objects by broadly , providing an improved toilet stool mounted on a supporting surface and `
including a generally annular conduit having an exit aperture and intake openings in communica~ion with the ins~le of the ~oilet bowl. The seat circumscribes the upper rim of the toilet bowl when in a lowered posi~ion.
~ ~:
3u A tank is mounted on the toilet s~ool and includes a flushing liquid and ... .. , ., ., ~ . . , ., .. . , .. ... ..... . ... . . . ,. .. . . .. " .. .. ,. . .. .... . .. , : ~
3g~ :
, eans connected therein to supply the flushing liquid ~o the toilet bowl through a discharge conduit. rhe improvement is a ventilating means which comprises an adapter plate situated underneath the tank and having the conduit seat pivotally at~ached thereto. The adapter plate has a structure defining a conduit which is in communication with the exit . ,, .;
aperture of the seat, A housed filter element which has an outlet and an inlet is additionally included and is in communication with ~he conduit seat through the conduit of the adapter. The ven~ilating means also has a means for removing normally con~aminated air from the inside of the toilet bowl 10 through the intake openings, the exit aperture, the conduit of the adapter pla~e, the inlet and the filter element, in order stated, for deodorizing the normally contaminated air and passing i~ into the surrounding atmosphere.
A switch means is connected to the rim and is operably connected to the means for removing such that pressure exerted on the top oE the seat ;
operates the swi~ch means to activate the means for removing.
It is therefore an objec~ of this invention to provide an improved toilet stool ventilating means which overcomes the aforementioned dis-advar~age's associated with prior art devices.
It is another o~ject of this invention to provide an improved toilet 20 stoo~ ventilating means which can be used within a conventional toilet stool structure without substantially altering its appearance.
It is yet another object of this invention to provide an improved toilet stool ventilating means which utilizes a filter, is easy to clean, and is also efficient and relatively economical to ~anufacture arld operate.
These, together with various ancillary objects and features which will become apparent as the following description pro~eeds are obtained by this novel ventilating means for a toilet stool, a preferred embodiment being shown in the accompanying drawings, by way of example only, wherein:
~ ig. 1 is a partial vertical sectional view disclosing the filter 3~) element and blower housed within the tank behind a watertight partition and ~ -_3_ , ~ . . . ,, , - . ,." ......... , . . . . . . .1 . ;, . ...
, ~-. , - . , . . .. ,, ., . . : ........ . ,. . , ..... . . , . , ~........ . . ,~
;, . , ,, , ~ ,. : . ., ,.. , ... .. ., . -i n communication with a condui~ in the adapter plate;
~ ig. 2 is a front elevational ~7iew of the toilet stool of ~ig. 1 having a cut away portion showing the watertigh~ partition separating the filter element and the blower from the flushing liquid;
~ ig. 3 is a partial top plan view of the stool and tank disclosing in dashed lines an embodiment of the adapter plate conduit;
Fig. 4 is a partial top plan view of another embodiment of the stool and tank disclosing in dashed lines the adapter plate conduit being pierced by a flushing liquid discharge conduit;
Fig. S is a fragmentary vertical sectional view disclosing the filter element and blower housed with a compartment connected under-neath the adapter plate;
l~ig. 6 is a partial vertical sectional view taken along the line 6-6 in ~ig. 4; and ~ ig~ 7 is a partial enlarged vertical sectional view of the switch means which activates the blower when pressure is applied to the toilet seat.
Referring in detail now to the drawings, wherein similar or like par~s of the invention are identified by like reference numerals, a 20 toilet stool, generally illustrated as 10, is mounted on a supporting surface 12 and has an annular conduit seat 14 horizontally and pivotally attached to an adapter plate L6, and is essentially aligned therewith when the seat ;, : .
14 is in a lowered position as shown in ~igs. 1, 2, 5 and 6. Conduit seat ;
14 has exit aperture 18 and intake openings 20 which are in communication with the inside of the toilet stool 10. The seat 14 circumscribes an upper rim 22 of the toilet stool 10. A tank 24 with lid 25 is mounted on top of adapter plate 16 and has a flushing liquid 17 and means 26 connected therein to supply the flushing liquid 17 from the tank 24 to the toilet stool 10 through a discharge conduit 28. The adapter plate 16 has .:
^0 a conduit 30 which is in communication with exit aperture 18 and is sealed ~ 4-i3~5i ~t 62. The discharge conduit 28 pierces condui~ 30 in ~igs. 4 and 6 such that the contaminated air being removed from the toilet stool lO generally flows around the conduit 30. ~igs. 1-3, and 5 disclose the discharge conduit 30 as being conventional and not piercing conduit 30.
A housed filter (preferably charcoal) element 32 has inlet 31 and outlet 33 and is in communication with conduit 30, and a means 34 is attached to filter 32 for removing normally contaminated air from the inside of the toilet s~ool 10 through the following: intake openings 20, -exit aperture 18, conduit 30, inlet 31, filter 32, and outlet 33, in order stated, for deodorizing the normally contaminated air and passing it into the atmosphere. Means 34 may be any suitable means but is preferably a blower and has a conduc~or 35 with a plug 37 attached there~o for insertion into a source of power (not shown in the drawings).
A switch means, generally indicated as 36, is connected to rim 22 and is electrically operably connected by conductors 38 to conductor 35 such that pressure exerted on the top of seat 14 operates switch means 36 to activate the means for removing 34. Switch means 36 may be any ~,, suitable switch which is capable of closing an electrical circuit.
Preferably, switch means 36 is a plunger-type as fully disclosed in l~ig. 7.
~ ig. 7 shows seat 14 compressing a plunger 40 which is slidably lodged within a sleeve 42 having a spring 44 for upwardly biasing the plunger 40 against the seat 14 when it is not being used. Contact bar 46 is pivotally fastened within housing 48 and is pivoted against a micro-switch 50 (well known within the art) by the downward force of the plunger 40. Mi~ro- swit~h 50 closes the circuit and activates the blower 34 .
Filter element 32 and the blower 34 attached thereto have two preferred embodiments for their loca~ion. l~igs. 1 and 2 disclose a first embodiment showing the filter 32 and blower 34 removably housed in the tank 24. A watertight partition 52 is attached to the internal walls of the tank 24 to ~ S - , :
r ~ 3~ 5 prevent filter 32 and blower 34 from being inundated with flushLng liquid 17.
~ilter 32 is lodged in compartment 54. ~ig. 5 discloses a second embodiment where filter 32 and blower 34 are removably housed in a compartment 56 which is attached underneath the adapter plate 16 and has a door 57.
Embodiment one discharges purified air from underneath the lid 25 (see l~ig, 1), and the second embodiment discharges purifiecl air into the sur-rounding atmosphere through louvers 60 (see ~ig. 5) With continual reference to the clrawings for operation of the inven-tion, seat 14 (normally biased upward by a spring which is not shown in the drawings) when used is lowered such that plunger 40 is driven against contact bar 46 which causes micro-switch 50 to close the electrical circuit on conductors 38 and 35 and activate the blower 34. When operating the blower 34 creates a vacuum through filter 32 and conduit 30 such that contaminated air within stool 10 is sucked through intake openings 20, through conduit 30, and through filter 32 wherein purification takes place.
Purified air egresses through outlet 33 and is blown into the surrounding atmosphere by blower 34 either through louvers 60 (~ig. 5) or underneath lid 25 (~ig. 1).
The path which the normally contaminated air takes to the inlet 31 of filter 32 depends on whether the embodiment in Fig. 3 is being used or the embodiment of Fig. 4 which causes the contaminated air to be swirled around discharge conduit 28 is being used. As aforementioned the em-bodiment of ~ig. 3 discloses the discharge conduit 28 as not piercing the .
conduit 30 and is somewhat conven~ional. After pressure is released from the top of seat 14 it is upwardly biased by a spring (not shown in the ~ ~drawings) such that seat 14 is lifted off the top of plunger 40. This ~;
causes spring 44 to upwardly bias the plunger away from the contact bar to open the electrical circuit on conductors 38 and 35 and deactivate the blower 34.
G
Claims (2)
1. An improved toilet stool mounted on a supporting surface and including a generally annular conduit seat having an exit aperture and intake openings in communication with the inside of the toilet bowl, said seat circumscribing the upper rim of said toilet bowl when in a lowered position, a tank supported on a rearwardly extending portion of said toilet stool behind said toilet bowl, having a flushing liquid and means connected therein to supply the flushing liquid to the toilet bowl through a discharge conduit, the improvement being:
(a) a ventilating means which comprises an adapter plate situated underneath said tank and having said conduit seat pivotally attached thereto and including a structure defining a conduit which is in communication with said exit aperture of said seat, said conduit of said adapter plate having the outlet thereof substantially spaced from said toilet bowl to one side and opening at a point underneath an end portion of said tank, (b) a housed filter element having an outlet and an inlet, said filter element inlet being communicably connected with said outlet of said conduit of said adapter plate, and (c) means attached to said filter for removing normally contami-nated air from the inside of said toilet bowl through said intake openings, said exit aperture, said conduit of said adapter plate, said inlet and said filter element, in order stated, for deodorizing said normally contaminated air and passing it into the surrounding atmosphere, (d) switch means connected to said rim and electrically operably connected to said means for removing such that pressure exerted on the top of said seat operates said switch means to activate said means for removing, (e) said adapter plate is horizontally attached to the rear of said seat and is essentially aligned therewith when said seat is in a lowered position, (f) said filter element inlet being situated immediately contiguous to said inlet of said conduit of said adapter plate and communicably connected therewith.
(g) said tank has a watertight partition uprightly attached to the internal sides of said tank forming a compartment in said tank with said partition separating said flushing liquid from said compartment, and said tank having an aperture through the bottom thereof in said compartment at one end portion thereof, (h) said filter element and said means for removing contaminated air being removably lodged within said compartment, and (i) said conduit of said adapter plate being communicably connected to said aperture in said tank.
(a) a ventilating means which comprises an adapter plate situated underneath said tank and having said conduit seat pivotally attached thereto and including a structure defining a conduit which is in communication with said exit aperture of said seat, said conduit of said adapter plate having the outlet thereof substantially spaced from said toilet bowl to one side and opening at a point underneath an end portion of said tank, (b) a housed filter element having an outlet and an inlet, said filter element inlet being communicably connected with said outlet of said conduit of said adapter plate, and (c) means attached to said filter for removing normally contami-nated air from the inside of said toilet bowl through said intake openings, said exit aperture, said conduit of said adapter plate, said inlet and said filter element, in order stated, for deodorizing said normally contaminated air and passing it into the surrounding atmosphere, (d) switch means connected to said rim and electrically operably connected to said means for removing such that pressure exerted on the top of said seat operates said switch means to activate said means for removing, (e) said adapter plate is horizontally attached to the rear of said seat and is essentially aligned therewith when said seat is in a lowered position, (f) said filter element inlet being situated immediately contiguous to said inlet of said conduit of said adapter plate and communicably connected therewith.
(g) said tank has a watertight partition uprightly attached to the internal sides of said tank forming a compartment in said tank with said partition separating said flushing liquid from said compartment, and said tank having an aperture through the bottom thereof in said compartment at one end portion thereof, (h) said filter element and said means for removing contaminated air being removably lodged within said compartment, and (i) said conduit of said adapter plate being communicably connected to said aperture in said tank.
2. The ventilating means of Claim 1 wherein said dis charge conduit pierces said conduit of said adapter plate such that contaminated air being removed from said toilet bowl generally flows around said discharge conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA243,822A CA1045305A (en) | 1976-01-20 | 1976-01-20 | Toilet stool ventilating means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA243,822A CA1045305A (en) | 1976-01-20 | 1976-01-20 | Toilet stool ventilating means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1045305A true CA1045305A (en) | 1979-01-02 |
Family
ID=4105010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA243,822A Expired CA1045305A (en) | 1976-01-20 | 1976-01-20 | Toilet stool ventilating means |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1045305A (en) |
-
1976
- 1976-01-20 CA CA243,822A patent/CA1045305A/en not_active Expired
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